Wheel-puller.



G. A. COLLISON.

WHEEL FULLER. APPLIQATION FILED MAB. 7, 1912.

1,043,400. Paented N0v.5,1912.

3 SHEETS-SHBET 1.

K5/3 wim f @Ml G. A. ooLLsoN.

WHEEL FULLER. APPLICATION FILED MAR. 7, 1912.

s SHBETSSHEET 2.

Patented Nov. 5, 1912.

G. A. COLLISON.

WHEEL PULLER.

APPLICATION FILED MARJ, 1912.

1,943,400., Patinted Nov. 5, 1912.

-3 SHEETS-SHEET 3.

Ano/mfr GEORGE A. COLLISDN, 0F BURLINGTON, VERMONT.

Specie'ation of Letters Patent.

Patented Nov. 5, 1912.

I Application led March 7, 1912. Seri-a1 No. 682,250.

To all whom it may concern;

Be it known that I, GEORGE A. CoLLIsom, a citizen .of the United States, and a resident of Burlingtom in the county of Chittenden and State ofVermont, have invented certain new and useful Improvements in lYheeL Pullers, of which the following is a specifi, cation.

This' invention relates to mechanism for pulling a wheel olf'a shaft or axle to which Y particularly true in the case of automobile wheels through which the car is propelled from the rear axles. All such wheels and similar parts are therefore forced with great security onto their shafts,-the metal actually being stretched more or less on account of the power with which theparts are drivenl together. It accordingly becomes a matter of great difficulty to remove such a wheel from its shaft. In the case of an automobile a wheel must frequently be removed, however, andquite often on the roadrormaway from factory facilities,4 forW exangle when the axles are sprung or wdaltrag'etlasthefffrequently are, or the wheels themselveisiiijured.

In order to make it possibleto readily remove wheels and similarppar'ts fromV a shaft, the present invention provides an improved device which is compact and easily portable, strong and durable, easy to manufacture and which is adjustable to any sort of hub on a wheel or similar part, whether the same is truly cylindrical or tapering, or has a bead or flange. l v

The invention further provides a machine which is adjustable to hubs of 'widely differing size, but which automatically clingsto or embraces the hub by the force or pressure of its own action in pressing against the end of the secured shaft, the degree of clinging pressure on the hub being proportionalY to the amount of longitudinalforce applied to the shaft, having in this detail an action similar to the action of pipe wrenches and similar appliances which have a gripping action proportional to the necessity therefor muse. v

'With these general and vother objects in view the invention consists in the improved implement for removing wheels and similar parts from a shaft, as hereinafter set forth. In the drawingsf-Figure 1, is a sectional v iew of a wheel-puller embodying the prin clples of this invention; Fig. 2, is a bottom plan view of the same; Fig. 8, isa view similar to Fig. 1 showing a modified form o f adjustment; Fig.,4, is a section on the line 4 4 of F 3 looking in the direction of the arrow ;-F.ig. 5, is a side elevation of thewheel-pullerfof Fig. 1 applied to the `A hub of-a wheel, .and Fig. 6, is a similar view showing the implement applied to a wheel hub of a slightly different character.

Constructions embodying the invention will include a plurality of jaws for gripping or engaging the surface of thehub of the wheel or similar part, and will further include a centrally projectable member having a longitudinal or a"ial movement with respect to the jaws. -The best constructions will be made with a base having a plurality of adjustable hooks with sharp hook ends constituting jaws for gripping the hub of the wheel or similar part. In order to obtain an adjustment for the hooks, the latter will in this construction be pivoted to the' base and extcnd froni the pivot point in a direction along the axis, fromwhich they converge or diverge, more or less, according tothe degree of adjustment required. The hooks will further be provided with some holding member or strain support for hold ing the hooks in theirfgripping relation on the h ulof the wheel. Constructions for this purpose may vary somewhat lin practice. In the construction shown in the drawing bifurcated links l0 are'attached to bent hooks 11 at the bend thereof between their sharp hook extremities 12 and their pivot points or fulcrums 13 on the base 14. These links 10 are jointed to a supplemental base place by any suitable fastening means .as a.

plemental base and passing through -a nut 18 constituting or forming part of the base 14. As shown in Figs. 1 and 2 the threaded sleeve 1,7 has a swivel lconnection 'with a ring 19 to whichthe Pivotal eyes or bearing 16 lof the `supplemental baseare attached. lt will be observed that the threaded sleeve'17 has a solid end thrustengagement at 2O in the direction where the strains of use will come. The other collar 21 of the swivel lconnection is pinned or secured in pin 22. The construction Aof Figs. 8 ande-lis I different to. thisextent that lthe screw threaded sleeve 17 forming a partA of the Vsupplemental base 15 is rigid dnd in fact ,in-

tegral therewith, while the nut 18 forming -part of the main base is swiveled-thereto instead of rigid with the latter. The character of the swivel connection is substantially the same and-has the samelcha'racteristics as' that just pointed but. in connectionwith the parts 19, 20, 21 and ,22. Within the threaded sleeve 17 thereis a forcing or pressure means-for which the sleeve constitutes an abutment cr strain resistance or strain l turned through any suitable.

support. This pressure means will best take the form of a screw 23 passing through the entire length of the threaded ysleeve 17 and having a center point 24 at oneend, and a head 25 at the other` end by which it may be engaging wrench. In addition to this, the Vnut 18 and .threaded sleeve 17 may be turnedswithfrespect to one another as a preliminary ad-` justment, and for this purpose the threaded i sleeve itself is turned in thel construction of take an automobile wheel oill the rear axle." The usualcap screw will of course be removed from the hub a-nd" thereafter the handle 26 of the wheel puller is'turned until thel jaws and hooks 11 separate enoughto embrace the wheel hub. A' few turns .of the handle 25 will then contract the jaws together until their hooked ends 12 cling or bite'into the 'metal at distributed points around the circumference of 'the hub. In this relation the implement is illustrated in both Figs.

5 and 6. y VIt is now merely necessary to turn the screws 23 vby any suitable wrench, which will cause its center point 24 to become embedded in the usual counter sunk center of the shaft, and furtlier rotation"`of the screw will bear with as much force on the shaft as the resistance vof the threaded sleeve 17, or in other words the anchorage or abutment,

`their limits. of strength.

there is a flange or bead on the hub as illuswill permit. The result of this .pressureV is transmitted to the hooks partlythrough the links l0v and partly through lthe inclined pivot ends of the hooks. The former strain is directly 'toward the center axis and the latter strain isr in most cases inclined toward the axis, the. inclination increasing with the size of the hub acted'upon. Thus the hooks 12 are caused 'to bite into the metal still more deeply, and when the action is of this character it will be found that the hooks do not tendto give way and scrape along even a parallel surface as shown in Fig. G. On the contrary,they hold fast to the extent ofany force which may be' put on them within Of course where trated in Fig. 5, there is no limit to the amount of pressure available.

While the invention lias'been particularly described in a practical'constiuction or coristructions in such detail as to enable the same to be practicallymanufactured and used, it is not desirous that the invention be particularly limited to this exact structure or structures since variations may be made within the scope of the appended'claiins.

,What is claimed is 1.An implement for removing bodies I from' shafts to which the same are secured,

comprising a base, a plurality of hooks hinged to said base, links for straining said hooks inwad to embrace and grip a pori tion of said body, and ,pressure means pro- "jectable through said base against the shaftto be removed, said pressure means acting to strain the hooks inward.

- An implement for removing bodies' from shafts to which the same are secured, comprising a base., a plurality of hooks distributed symmetrically` around said base and hinged thereto," said hooks having sharp .i

hook-extremities, links connected to thei jhoolrs intermediate" of their length for straining said hooks inward to embrace andgrip a portion of said body, and pressure means'projectablethrough said base against tle shaft to be'removed.

.3. An implement ,for removing hinged thereto, asupplemental base, links bodies from shafts to which the same are secured,

connected tothe hooks intermediate of their -i length. for straining said hooks inward from said supplemental base, means for fixing the separation of said bases at different disstances, and pressure means projectable' through said last mentioned means the shaft to be removed.

4. An implementH for removing `bodies from shafts to which the same are secured,

against comprising a base, a plurality of hooks symmetrically distributed around said base and .having sharpf hook extremities adapted to embrace and gri-p a portion of said body, a supplemental base, links joining said hooks and supplemental base, means for adjusting and fixing the'separation of said bases at different distances to strain the hooks inward through said links, and pressure means projectable through said base against',the shaft to be removed.V 5. An' implement for removing bodies from shafts to which the saine are secured, comprising a base, a plurality of hooks symmetrically arranged around said base, said hooks having sharp hoolzzyextremities` adapted to embrace and grip a portion ofsaid y body, a supplemental base, links joining an intermediate portion of said hooks with said supplemental base, a threaded sleeve for fixing'the separation of said bases at different distances and straining the said links, and a central screw projectable through said sleeve against the shaft to be removed.

16. An implement for removing bodies from shafts to which the same are secured, comprising a base, a plurality of hooks sym? metrioally distributed around the base and pi-voted thereto and diverging from such base symmetrically about a central axis, a supplemental base, .links joining intermedi- 'ate portions of said hooks with said supplemental base, a sleeve having a shoulder supporting the supplementary base, and

- means for moving said sleeve to strain saidbases' toward one another, and pressure means projectable through 'said sleeve against the shaft to be removed.

7. An implement for removing bodies from shafts to Which the same are secured, comprising a` base, a plurality of bent hooks comprising a base, a. plurality of hooks synimetrically distributed around the base and pivoted thereto, a supplemental base, links joining said hooks and said supplemental base, a threaded sleeve for straining said bases toward one` another, a handle by which the-same'y is actuated, and pressure means projectable through said sleeve against the shaft to be removed.

9. Aniimplrnent for removing bodies from shafts to 'which the same are secured,

comprising a base, benthooks symmetrically grouped around said baseand pivoted thereto, said hooks diverging from said base symmetrically about a common axis, a supplemental base, straddle links joining the bent portions of said hooks with said supplemental base, a threaded sleeve, means for actuating said sleeve to separate and draw the bases toward one another, and

pressure means projectable through said sleeve against the shafts to be removed.

Signed at Burlington, in the county of Chittenden and State of Vermont this 8th l day of February A. D. 1912.

` GEORGE A. QOLLISON.

Vlflitn'esses;

S. A. Norr,

Cristina D. GRATON. 

